Accompanying Files
Observation Details
Error state in "Handyankauf" dialog window uses color on the input field. Color used has not enough contrast ratio to background color and not enough color contrast ratio to default or success state of input field.
Remediation Notes
Ensure, focus states of interactive elements can be differentiated from default, un-focused states by at least one other visually perceivable factor. The issue may be remediated by ensuring high enough color contrast ratio of 3:1 for difference between states.
Preferably though, use focus outlines to indicate focus state of interactive elements, as it is browser default and known pattern to users.